<template>
	<header id="head_top">
		<slot name="logo"></slot>
		<slot name="search"></slot>
		<section class="head_goback" v-if="goBack" @click="$router.go(-1)">
		    <svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg" version="1.1">
		        <polyline points="12,18 4,9 12,0" style="fill:none;stroke:rgb(255,255,255);stroke-width:2"/>
		    </svg>
		</section>
		<slot name="changecity"></slot>
	</header>
</template>
	
<script>
	export default {
		props: ['goBack'],
	}
</script>

<style lang="scss" scoped>
    @import '../../style/mixin';

    #head_top{
        background-color: $blue;
        position: fixed;
        z-index: 100;
        left: 0;
        top: 0;
        @include wh(100%, 1.95rem);
    }
    .head_goback{
        left: 0.4rem;
        @include wh(0.6rem, 1rem);
        line-height: 2.2rem;
        margin-left: .4rem;
    }
    .head_login{
        right: 0.55rem;
        @include sc(0.65rem, #fff);
        @include ct;
        .login_span{
            color: #fff;
        }
        .user_avatar{
            fill: #fff;
            @include wh(.8rem, .8rem);
        }
    }
    .title_head{
        @include center;
        width: 50%;
        color: #fff;
        text-align: center;
        .title_text{
            @include sc(0.8rem, #fff);
            text-align: center;
            font-weight: bold;
        }
    }
</style>